Title :
A probabilistic approach to clock synchronization of cascaded network elements
Author :
Na, Chongning ; Obradovic, Dragan ; Scheiterer, Ruxandra Lupas
Author_Institution :
Corp. Technol., Inf. & Commun., Siemens AG, Munich
Abstract :
Precision time protocol (PTP) synchronizes clocks of networked elements by exchanging messages containing precise time-stamps. Based on the available timing information, different algorithms can be developed for the clock synchronization. This paper introduces a novel PTP-based method in which clock synchronization is formulated as a probabilistic inference problem and is solved by Kalman filtering. The performance of this approach is verified by numerical results.
Keywords :
Kalman filters; local area networks; probability; protocols; Kalman filter; cascaded network element; clock synchronization; precision time protocol; probabilistic approach; probabilistic inference problem; Clocks; Communications technology; Ethernet networks; Frequency synchronization; Jitter; Master-slave; Network topology; Protocols; Time measurement; Timing; Clock synchronization; Kalman filter; Precision Time Protocol; probabilistic model;
Conference_Titel :
Acoustics, Speech and Signal Processing, 2009. ICASSP 2009. IEEE International Conference on
Conference_Location :
Taipei
Print_ISBN :
978-1-4244-2353-8
Electronic_ISBN :
1520-6149
DOI :
10.1109/ICASSP.2009.4959953
